Mercedes-Benz W204 W212 M271 CGI Alternator Generator A0009063000 - Used Original Parts

Diagnosis and Common Symptoms

The alternator in the M271 CGI engine is a high-duty cycle component that manages complex power requirements via the LIN bus system. Failure typically manifests through a red battery warning icon on the instrument cluster or the message "Battery/Alternator Visit Workshop." Technicians often identify failure through fault codes such as P0620 (Generator Control Circuit) or U012087 (Communication with the starter/generator has a malfunction). Physical symptoms include dimming headlights during idle, a burning rubber smell from belt slippage due to a seized pulley, or a high-pitched whining noise indicating bearing wear. If your voltage drops below 13.2V while the engine is running, the internal regulator or windings have likely reached the end of their service life.

Introduction

This is a Genuine used alternator specifically sourced from donor vehicles with low mileage to ensure longevity and electrical integrity. Every unit undergoes a rigorous bench test to verify that the internal voltage regulator and rectifier bridge are communicating correctly with the vehicle's power management system. By choosing a Genuine Mercedes-Benz part over an aftermarket equivalent, you ensure that the LIN bus communication remains stable, preventing ghost codes and electrical interference. This part is a direct replacement, cleaned and inspected to meet professional installation standards.

Product Details

• Brand: Mercedes-Benz
• Model Compatibility: W204 C-Class (C180, C200, C250 CGI) and W212 E-Class (E200, E250 CGI)
• Part Name: Alternator / Generator / Bosch Type
• Part Number: A0009063000
• Engine: M271 Evo / CGI Turbocharged
• Condition: Genuine Used (Tested Working)
• Notes: Includes the decoupler pulley and internal regulator.
• Voltage: 14V
• Amperage: 150A